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NEET CHEMISTRYAlcohols, Phenols and EthersMedium

Question

Among the following, which hydrolysis reaction occurs at the slowest rate:

A

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B

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C

4

D

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Step-by-Step Solution

The rate of hydrolysis (nucleophilic substitution) depends heavily on the nature of the carbon-halogen bond. Aryl halides and vinyl halides are extremely unreactive towards hydrolysis because the lone pair of electrons on the halogen atom is in conjugation with the π\pi-electrons of the benzene ring or double bond. This resonance imparts a partial double bond character to the C-X bond, making it very difficult to break. In contrast, standard alkyl, allylic, and benzylic halides undergo hydrolysis much more readily via SN1S_N1 or SN2S_N2 mechanisms. Since the structural options are missing from the provided text, the exact correct option cannot be visually evaluated and verified.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Alcohols, Phenols and Ethers. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYAlcohols, Phenols and Ethersfollowinghydrolysisreactionoccursslowest

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When phenol is treated with CHCl₃ and NaOH, the product formed is:

A.Benzaldehyde
B.Salicylaldehyde
C.Salicylic acid
D.Benzoic acid
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Which of the following statement is correct for the stability of ions of ethyl alcohol and phenol:

A.Delocalization of π-electrons in phenoxide ion
B.Delocalization of electrons in ethoxide ion
C.Inductive effect of ethyl and phenyl group
D.Localization of σ-electrons in phenoxide ion
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When glycerol is treated with an excess of HI, it produces:

A.Allyl iodide
B.Propene
C.Glycerol triiodide
D.2-Iodopropane
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Which of the following can be used as the halide component for Friedel-Crafts reaction?

A.Chlorobenzene
B.Bromobenzene
C.Chloroethene
D.Isopropyl chloride
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Which of the following is not the product of dehydration of the given alcohol?

A.Option 1
B.Option 2
C.Option 3
D.Option 4
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The most reactive compound among the following toward electrophilic aromatic substitution reaction is:

A.Toluene
B.Benzene
C.Chlorobenzene
D.Nitrobenzene
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Which one of the following compounds will be most readily dehydrated?

A.Option 1
B.Option 2
C.4
D.Option 4
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Among the following four compounds: (a) Phenol (b) Methyl phenol (c) meta-nitrophenol (d) para-nitrophenol The acidity order is:

A.c > d > a > b
B.a > d > c > b
C.b > a > c > d
D.d > c > a > b
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